公开(公告)号：US09451569B1

公开(公告)日：2016-09-20

申请号：US14022739

申请日：2013-09-10

Applicant: Marvell International Ltd.

Inventor： Chusong Xiao ,  Qing Zhao ,  Manyuan Shen ,  Leilei Song ,  Hui-Ling Lou

IPC: H04W56/00 ,  H04J11/00

CPC classification number: H04W56/001 ,  H04J11/0073 ,  H04J11/0076

Abstract: Systems and methods are provided for detecting a received synchronization signal. The method includes receiving, at a receiver, a signal from a transmitter and the signal includes the received synchronization signal. The method includes processing the received signal and a plurality of candidate synchronization signals to obtain a plurality of correlation signals. Each candidate synchronization signal is associated with one of the plurality of correlation signals. The method includes selecting, based at least in part on the plurality of correlation signals, one of the plurality of candidate synchronization signals. The selected candidate synchronization signal is correlated with the received synchronization signal. The method includes detecting the received synchronization signal based at least in part on (i) the received signal, and (ii) a characteristic obtained from the correlation signal that is associated with the selected candidate synchronization signal.

Abstract translation: 提供了用于检测所接收的同步信号的系统和方法。 该方法包括在接收机处接收来自发射机的信号，该信号包括所接收的同步信号。 该方法包括处理接收信号和多个候选同步信号以获得多个相关信号。 每个候选同步信号与多个相关信号之一相关联。 所述方法包括至少部分地基于所述多个相关信号来选择所述多个候选同步信号中的一个。 所选择的候选同步信号与所接收的同步信号相关。 该方法至少部分地基于（i）接收信号检测接收到的同步信号，以及（ii）从与所选候选同步信号相关联的相关信号获得的特性。

公开(公告)号：US08781042B1

公开(公告)日：2014-07-15

申请号：US14050893

申请日：2013-10-10

Applicant: Marvell International Ltd.

Inventor： Qing Zhao ,  Souvik Dihidar ,  Leilei Song ,  Jungwon Lee

IPC: H03D1/04

CPC classification number: H04L27/2647 ,  H04L25/06

Abstract: In accordance with the teachings described herein, systems and methods are provided for calibrating DC offset in a receiver. A DC calibration circuit may be used that is configured to receive a digital multi-carrier modulated (MCM) signal that includes a sequence of MCM symbols. The DC calibration circuit may include an accumulator and a compensator. The accumulator may be used to determine an estimated DC offset of a current MCM symbol in the sequence of MCM symbols. The compensator may be used to remove the estimated DC offset from a next MCM symbol in the sequence of MCM symbols. The accumulator may also be used to receive a plurality of digital samples that comprise the current MCM symbol and to determine the estimated DC offset by calculating an average of the plurality of digital samples.

Abstract translation: 根据本文所述的教导，提供了用于校准接收机中的DC偏移的系统和方法。 可以使用DC校准电路，其被配置为接收包括MCM符号序列的数字多载波调制（MCM）信号。 DC校准电路可以包括蓄电池和补偿器。 可以使用累加器来确定MCM符号序列中的当前MCM符号的估计DC偏移。 补偿器可以用于从MCM符号序列中的下一个MCM符号中去除估计的DC偏移。 累加器还可以用于接收包括当前MCM符号的多个数字样本，并且通过计算多个数字样本的平均值来确定估计的DC偏移。

公开(公告)号：US10334614B1

公开(公告)日：2019-06-25

申请号：US15357781

申请日：2016-11-21

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Jihwan P. Choi ,  Hui-Ling Lou ,  Leilei Song ,  Yakun Sun ,  Qing Zhao

IPC: H04J3/00 ,  H04W72/12 ,  H04W88/06

Abstract: Various methods and apparatus are disclosed for mitigating interference between communications between different radio access technologies in a communication device. Methods and apparatus include communicating between a first communication device and a second communication device according to a first communication protocol, and communicating between the first communication device and a third communication device according to a second communication protocol. The methods and apparatus further include determining a first time interval associated with when data is to be transmitted between the first communication device and the second communication device according to the first communications protocol. The methods and apparatus also include sending to the third communication device, an indication of a second time interval to prompt the third communication device not transmit to the first communication device during the second time interval, wherein the second time interval corresponds to the first time interval.

公开(公告)号：US09166740B1

公开(公告)日：2015-10-20

申请号：US14165893

申请日：2014-01-28

Applicant: Marvell International Ltd.

Inventor： Adina Matache ,  Leilei Song ,  Bhaskar V. Nallapureddy ,  Hui-Ling Lou

IPC: H03M13/45 ,  H04L1/00 ,  H04L25/03 ,  H04L5/12 ,  H04L27/06

CPC classification number: H04L1/0054 ,  H03M13/45 ,  H04L25/03171 ,  H04L25/03242 ,  H04L25/03318

Abstract: Systems and methods are provided for determining a data value for a bit of interest in a received data signal. A closest 0-bit symbol candidate is selected from a plurality of 0-bit symbol candidates using a symbol selection distance approximation. A closest 1-bit symbol candidate is selected from a plurality of 1-bit symbol candidates using the symbol selection distance approximation. A 0-bit distance between the received data signal and the selected 0-bit symbol candidate is determined, and a 1-bit distance between the received data signal and the selected 1-bit symbol candidate is determined. A log likelihood ratio is calculated for the bit of interest using the determined 0-bit distance and the determined 1-bit distance.

Abstract translation: 系统和方法被提供用于确定接收到的数据信号中感兴趣的位的数据值。 使用符号选择距离近似从多个0位符号候选中选择最接近的0位符号候选。 使用符号选择距离近似，从多个1位符号候选中选择最接近的1位符号候选。 确定接收到的数据信号和所选择的0位符号候选之间的0比特距离，并确定接收到的数据信号与所选择的1比特符号候选之间的1比特距离。 使用所确定的0比特距离和所确定的1比特距离来计算感兴趣比特的对数似然比。

公开(公告)号：US08811462B1

公开(公告)日：2014-08-19

申请号：US13942255

申请日：2013-07-15

Applicant: Marvell International Ltd.

Inventor： Qing Zhao ,  Jungwon Lee ,  Leilei Song ,  Songping Wu ,  Hui-Ling Lou

IPC: H04B3/46 ,  H04B17/00 ,  H04Q1/20

CPC classification number: H04L27/2656 ,  H04L27/2676

Abstract: A receiver device detects a plurality of symbols in a signal and determines, based on the one of the plurality of detected symbols, an estimated beginning of a subsequent frame. The receiver device determines whether the estimated start of the subsequent frame corresponds to an actual start of the subsequent frame. When the estimated start of the subsequent frame corresponds to the actual start of the subsequent frame, the receiver is synchronized to the actual start of the frame. When the estimated start of the subsequent frame does not corresponds to the actual start of the subsequent frame, the receiver device determines, based on a further one of the plurality of detected symbols, an estimated beginning of another subsequent frame. The receiver device determines whether the estimated start of the other subsequent frame corresponds to an actual start of the other subsequent frame.

Abstract translation: 接收机设备检测信号中的多个符号，并且基于多个检测符号中的一个确定后续帧的估计开始。 接收机设备确定后续帧的估计开始是否对应于后续帧的实际开始。 当后续帧的估计开始对应于后续帧的实际开始时，接收机与帧的实际开始同步。 当后续帧的估计开始不对应于后续帧的实际开始时，接收机设备基于多个检测到的符号中的另一个确定另一后续帧的估计开始。 接收机设备确定其他后续帧的估计开始是否对应于另一个后续帧的实际开始。

公开(公告)号：US09503245B1

公开(公告)日：2016-11-22

申请号：US14136860

申请日：2013-12-20

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Jihwan P. Choi ,  Hui-Ling Lou ,  Leilei Song ,  Yakun Sun ,  Qing Zhao

IPC: H04J3/00 ,  H04L5/00

CPC classification number: H04L5/0062 ,  H04L5/0028

Abstract: Various methods and apparatus are disclosed for mitigating interference between communications between different radio access technologies in a communication device. Methods and apparatus include communicating between a first communication device and a second communication device according to a first communication protocol, and communicating between the first communication device and a third communication device according to a second communication protocol. The methods and apparatus further include determining a first time interval associated with when data is to be transmitted between the first communication device and the second communication device according to the first communications protocol. The methods and apparatus also include sending to the third communication device, an indication of a second time interval to prompt the third communication device not transmit to the first communication device during the second time interval, wherein the second time interval corresponds to the first time interval.

Abstract translation: 公开了用于减轻通信设备中的不同无线电接入技术之间的通信之间的干扰的各种方法和装置。 方法和装置包括根据第一通信协议在第一通信设备和第二通信设备之间进行通信，以及根据第二通信协议在第一通信设备和第三通信设备之间进行通信。 所述方法和装置还包括确定与根据第一通信协议在第一通信设备和第二通信设备之间传输数据相关联的第一时间间隔。 所述方法和装置还包括向第三通信设备发送第二时间间隔的指示，以在第二时间间隔期间促使第三通信设备不发送到第一通信设备，其中第二时间间隔对应于第一时间间隔 。

公开(公告)号：US09444537B1

公开(公告)日：2016-09-13

申请号：US15000175

申请日：2016-01-19

Applicant: Marvell International Ltd.

Inventor： Jihwan P. Choi ,  Hui-Ling Lou ,  Ying Cai ,  Leilei Song ,  Vladan Petrovic

IPC: H04W72/04 ,  H04B7/04 ,  H04W52/34

CPC classification number: H04B7/0486 ,  H04W52/26 ,  H04W52/265 ,  H04W52/346 ,  H04W52/38 ,  H04W72/0453 ,  H04W84/12

Abstract: A device including a transmitter, a receiver and an arbiter. The transmitter transmits a first signal. The first signal has a fundamental frequency in a first frequency band of a first wireless protocol. The receiver receives a second signal. The second signal has a fundamental frequency in a second frequency band of a second wireless protocol. The first frequency band is adjacent to or at least partially overlaps the second frequency band. The arbiter allows the transmitter to transmit the first signal in the first frequency band while the receiver receives the second signal in the second frequency band. The arbiter also, if a power level of the first signal is less than a first threshold, changes: a modulation and coding scheme of the transmitter for the first signal; a modulation and coding scheme of the receiver for the second signal; or a multiple input and multiple output rank.

Abstract translation: 一种包括发射机，接收机和仲裁器的设备。 发射机发射第一个信号。 第一信号在第一无线协议的第一频带中具有基频。 接收器接收第二信号。 第二信号在第二无线协议的第二频带中具有基频。 第一频带与第二频带相邻或至少部分重叠。 仲裁器允许发射机在第一频带中发送第一信号，同时接收器接收第二频带中的第二信号。 如果第一信号的功率电平小于第一阈值，则仲裁器还改变：用于第一信号的发射机的调制和编码方案; 用于第二信号的接收机的调制和编码方案; 或多输入和多输出等级。

公开(公告)号：US09197461B1

公开(公告)日：2015-11-24

申请号：US14207117

申请日：2014-03-12

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Yakun Sun ,  Leilei Song ,  Hui-Ling Lou ,  Mingguang Xu

IPC: H04B7/02 ,  H04L25/03 ,  H04B7/04 ,  H04L1/06 ,  H04L1/00

CPC classification number: H04B7/02 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0854 ,  H04L1/00 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/06 ,  H04L1/0618 ,  H04L25/03 ,  H04L25/03038 ,  H04L25/03057 ,  H04L25/03891

Abstract: In a method for performing successive interference cancellation (SIC) in a multiple input, multiple output (MIMO) communication channel, a plurality of received signals are processed to decode a first codeword. An equalizer is generated corresponding to a second codeword and applied to the plurality of received signals to generate an equalized signal. An interference signal is also generated using the first codeword and then subtracted from the equalized signal. The equalized signal is processed to decode the second codeword.

Abstract translation: 在用于在多输入多输出（MIMO）通信信道中执行连续干扰消除（SIC）的方法中，处理多个接收信号以对第一码字进行解码。 产生对应于第二码字的均衡器并将其应用于多个接收信号以产生均衡的信号。 还使用第一码字产生干扰信号，然后从均衡信号中减去干扰信号。 处理均衡信号以对第二码字进行解码。

公开(公告)号：US09130749B1

公开(公告)日：2015-09-08

申请号：US14019006

申请日：2013-09-05

Applicant: Marvell International Ltd.

Inventor： Leilei Song ,  Hui-Ling Lou ,  Zheng Zhang

IPC: H04L1/18 ,  H04L1/08 ,  H04L1/00

CPC classification number: H04L1/1812 ,  H04L1/0045 ,  H04L1/08 ,  H04L1/1845

Abstract: Methods and systems for decoding a data packet using soft-bit retransmission combining are provided herein. A first transmission of the data packet is received and corresponding soft information is generated. The soft information is represented by a first set of bits and a subset of those bits is stored. Subsequently, a second transmission of the data packet is received and corresponding soft information is generated. The soft information corresponding to the second transmission is represented by a second set of bits and combined with the stored subset of soft-bits corresponding to the first transmission to produce a third set of bits. At least a portion of the data packet is decoded based on the third set of bits.

Abstract translation: 本文提供了使用软比特重传组合对数据分组进行解码的方法和系统。 接收数据包的第一次发送，并产生相应的软信息。 软信息由第一组位表示，并且存储这些位的子集。 随后，接收数据包的第二次发送，并产生相应的软信息。 与第二传输相对应的软信息由第二组位表示，并与存储的与第一传输对应的软比特组合，以产生第三组比特。 数据分组的至少一部分基于第三组位被解码。

公开(公告)号：US08817916B1

公开(公告)日：2014-08-26

申请号：US14065003

申请日：2013-10-28

Applicant: Marvell International Ltd.

Inventor： Konstantinos Sarrigeorgidis ,  Yanni Chen ,  Leilei Song ,  Kedar Shirali

IPC: H04L27/00

CPC classification number: H04L25/067 ,  H03M13/612 ,  H04L1/0045 ,  H04L25/03286 ,  H04L27/2647

Abstract: Methods and apparatus are provided for performing log-likelihood ratio (LLR) computations in a pipeline. Portions of a metric used to compute LLR values are computed in one pipeline part. The portions correspond to all permutations of some received signal streams. The portions are combined with one permutation x2 of the received signal stream that was not included in the previous pipeline computation in a subsequent pipeline part to produce M values associated with a particular bit position. At each subsequent clock cycle, a different permutation of x2 is combined with the previously computed portions producing different M values. State values corresponding to different values of bit positions of the received stream are computed by finding the minimum among the M values, in each clock cycle, that affect a particular bit position. The state values are combined to compute the LLR values for the bit position in a final pipeline part.

Abstract translation: 提供了在流水线中执行对数似然比（LLR）计算的方法和装置。 用于计算LLR值的度量的部分在一个管道部分中计算。 这些部分对应于一些接收的信号流的所有排列。 这些部分与接收信号流的一个置换x2组合在一起，该置换x2未被包括在随后的流水线部分中的先前流水线计算中，以产生与特定位位置相关联的M个值。 在每个随后的时钟周期，x2的不同置换与先前计算的产生不同M值的部分组合。 通过在每个时钟周期内找到影响特定位位置的M个值中的最小值来计算对应于接收流的比特位置的不同值的状态值。 组合状态值以计算最终流水线部分中位位置的LLR值。